Chest Style Ultra Low Freezers -40°C To -85°C, 9 cu.ft., Manual Defrost Overview
The Chest Style Ultra Low Freezers -40°C To -85°C, 9 cu.ft., Manual Defrost (model ULF301C) from Yamato Scientific is a cascade-refrigerated laboratory freezer holding 255 L across a -40°C to -85°C range. LabSupplies.com, authorized dealer, stocks this unit for long-term biological and reagent storage. Its 9 cu.ft. chamber accepts up to 16 racks.
Chamber walls use 14-gauge zinc-coated galvanized steel, while the exterior is 16-gauge steel finished in powder-coated cool gray. Cascade refrigeration pairs two hermetic compressors with CFC- and HCFC-free R-508B and R-404A refrigerants. Air-cooled condensing relies on two heavy-duty fans, eliminating any liquid coolant requirement.
Power options span 115V, 208V, and 230V at 60 Hz single-phase, plus 220V at 50/60 Hz single-phase. Exterior dimensions measure 57.5" × 29" × 46.5", and the unit weighs 675 lbs. Built in the USA and UL Listed, ULF301C ships from LabSupplies.com inventory.
Key Features
- Digital control system: microprocessor controller with dual display showing set point and chamber temperature, a scan button for temperature setting, and tamper-proof lockout.
- Alarm system: audible and visual signals on mechanical or electrical failure, over- and under-temperature settings, an alarm silencing switch, and a battery test switch.
- Battery-backed alarm: battery-operated alarm circuit keeps monitoring active during power interruptions.
- Remote alarm relay: a built-in relay supports remote alarm hook-up for centralized facility monitoring.
- Power failure recovery: an automatic timer system restarts the unit after a power failure.
- Access port: 1/2" access port supports probes and chart-recorder leads; chamber accepts up to 16 racks.
How to Choose the Right Ultra-Low Freezer
Selecting a chest ultra-low freezer comes down to matching chamber capacity, achievable temperature, control sophistication, and site power to your storage protocol. Weigh each axis below against your sample inventory and lab infrastructure.
- Temperature range: confirm the unit reaches your required hold point; this model covers -40°C to -85°C for long-term biological and reagent storage.
- Capacity and rack count: a 9 cu.ft. (255 L) chamber holding 16 racks suits mid-volume sample libraries; size to current inventory plus growth.
- Control type: microprocessor digital control with dual display and tamper-proof lockout protects set points in shared labs.
- Voltage and site power: verify your circuit matches the available 115V, 208V, 230V, or 220V configurations before installation.
- Safety and monitoring: battery-backed audible/visual alarms, a remote relay, and automatic power-failure recovery guard irreplaceable samples.
- Footprint and weight: plan floor space for a 57.5" × 29" × 46.5" cabinet weighing 675 lbs.
Specifications
| Specification | Detail |
|---|---|
| Capacity | 9 cu.ft. |
| Temperature Range | -40°C to -85°C |
| Defrost | Manual |
| Interior Capacity | 255 L / 9 cu.ft. |
| Rack Capacity | 16 racks |
| Interior Dimensions | 46" × 16" × 20" (116 × 40 × 50 cm) |
| Exterior Dimensions | 57.5" × 29" × 46.5" (146 × 73 × 116 cm) |
| Temperature Control System | Digital control with dual display (set point and chamber temperature); scan button for temperature setting; tamper-proof lockout |
| Refrigeration System | Cascade type — two hermetic compressors |
| Refrigerant | CFC-free R-508B and R-404A (CFC- & HCFC-free) |
| Condenser | Air-cooled with two heavy-duty fans; no liquid coolant required |
| Alarm System | Battery-operated alarm emits an audible and visual signal on mechanical or electrical failure; over- and under-temperature settings, alarm silencing switch, and battery test switch; relay provided for remote alarm hook-up |
| Power Failure Recovery | Automatic timer system restarts the unit after a power failure |
| Electrical Requirements | 115V / 208V / 230V, 60 Hz, 1-phase; 220V, 50/60 Hz, 1-phase |
| Optional Accessories | Chart recorder; CO₂ and LN₂ back-up system; racks; cold safety gloves |
| Material | Chamber is 14-ga. Zinc coated galvanized steel. Exterior is 16-ga. steel. Power coated cool gray |
| Country of Origin | USA |
| GTIN (Barcode) | 797059929863 |
| Shipping Weight | 675 lbs |
| Dimensions (L × W × H) | 62 × 40 × 55 in |
| Component Size | 9 CF |
| Other Certification | UL Listed |
Available Sizes and Configurations
| SKU | Configuration | Pack |
|---|---|---|
| ULF-301C | EA | EA |
Documentation
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Why Buy From LabSupplies.com
LabSupplies.com is an authorized Yamato Scientific dealer, so every ULF301C ships as a genuine unit backed by the manufacturer warranty. Order directly and our lab-equipment specialists stand ready to answer spec questions before purchase.
- Authorized Yamato dealer: genuine unit with full manufacturer warranty.
- In stock: ready to ship from USA inventory.
- Built in the USA: manufactured domestically and UL Listed.
- Specialist support: dedicated lab-equipment team for technical and spec questions.
Frequently Asked Questions
What temperature range does the ULF301C reach?
The ULF301C operates across a -40°C to -85°C range. Cascade refrigeration using two hermetic compressors and CFC-/HCFC-free R-508B and R-404A refrigerants achieves these ultra-low set points for long-term sample storage.
How much storage capacity and rack space does this freezer offer?
The chamber provides 9 cu.ft. (255 L) of interior capacity and holds up to 16 racks. Interior dimensions measure 46" × 16" × 20" (116 × 40 × 50 cm).
What voltage and power supply does the ULF301C require?
The unit supports 115V, 208V, and 230V at 60 Hz single-phase, plus 220V at 50/60 Hz single-phase. Confirm your circuit matches the configuration ordered before installation.
What materials is the cabinet made from?
The chamber is 14-gauge zinc-coated galvanized steel and the exterior is 16-gauge steel finished in powder-coated cool gray. This construction supports durable laboratory use.
What alarm and failure-protection features are included?
A battery-operated alarm emits audible and visual signals on mechanical or electrical failure, with over- and under-temperature settings, a silencing switch, and a battery test switch. A relay supports remote alarm hook-up, and an automatic timer restarts the unit after a power failure.
What are the exterior dimensions and weight for installation planning?
Exterior dimensions are 57.5" × 29" × 46.5" (146 × 73 × 116 cm) and the unit weighs 675 lbs. Plan adequate floor space and clearance for the air-cooled condenser fans.